1673870981333 has 2 divisors, whose sum is σ = 1673870981334. Its totient is φ = 1673870981332.

The previous prime is 1673870981291. The next prime is 1673870981371. The reversal of 1673870981333 is 3331890783761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 885740735044 + 788130246289 = 941138^2 + 887767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673870981333 - 2⁶ = 1673870981269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1673870984333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836935490666 + 836935490667.

It is an arithmetic number, because the mean of its divisors is an integer number (836935490667).

Almost surely, 2^{1673870981333} is an apocalyptic number.

It is an amenable number.

1673870981333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673870981333 is an equidigital number, since it uses as much as digits as its factorization.

1673870981333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 59.

The spelling of 1673870981333 in words is "one trillion, six hundred seventy-three billion, eight hundred seventy million, nine hundred eighty-one thousand, three hundred thirty-three".